Question

How has the knowledge and perception of the universe changed over the past century?

Answer 1

Our understanding of the universe has changed a lot over time!
Ptolemy
He improved on Aristotle's theory which was that the earth was the center of the universe also known as geocentric.
Nicolaus Copernicus
Copernicus had a theory that the sun was the center of our solar system. This is also known as heliocentric.
Tycho Brahe
His work supported the idea that the Earth orbited the sun.
Brahe hired Kepler, another astronomer to work with him.
How has our understanding of the universe changed over time?
Aristotle
Johannes Kepler
Galileo
Isaac Newton
Edmund Halley
Edwin Hubble
By Isamilla & Nelleke
The Hubble space telescope was named after Edwin Hubble.

He had three laws of motion.

He hypothosized that the nebulae were their own galaxies.
He imagined the earth at the 
center of the universe with the sun, the moon, the stars and the planets orbiting it in perfect circles.
Newton put Kepler and Galileo's ideas together and discovered that the reason that things fall on the ground is the same reason that planets orbit around the sun.
He made a telescope that could magnify
up to 30 times.
He discovered that Copernicus' theory 
was true. "We're not the center of the universe."
He found out that the planets orbit the
sun in ellipses (oval shapes).
He explained how the tides were made by the moon.
He figured out that the speed of the planets depend on the sun.

Halley discovered a comet. It was discovered in 1705. It will come around again in 2061

The comet Halley comes every 75 - 76 years

384–322 BCE
90 AD – 168 AD
1473 – 1543
1546 – 1601
1571 – 1630
1564 – 1642
1642 – 1727
1656 – 1742
1889 – 1953
Celestial Sphere
It's an invisible sphere around the earth

Answer 2

Answer:

From over a 100 years the universe we knew and the knowledge that scientist possessed from the research of over thousand years reached to new peaks of development.

Explanation:

• Broadminded view of research workers led to development in science and technology:

The researchers and scientist at that time had a broad mind about the development of technology and science, and they invented various electronic chips and machines which led to evolution in the universe.

Telescopes: Telescopes were made and developed to become more powerful and complex as they carried out research work in the different zones on the universe, specially in our solar system.Like Huble telescope which is on different missions to explore the universe and beyond.

Even there are some fields of research work in which the life and events happened in the past are explore and studied by the scientists and students.

• Privatization of space and technological companies:

It was a time when the government had the authority to produce and develop machines to explore our solar system, which led to many hardships for independent researchers and scientists. Now a days companies like spaceX, conducts the space exploration missions and collects important data about the solar system. Along with analyzing other heavenly bodies present in the universe.

• Software's enhancement and hardware developments into small chips:

The software were enhanced as new embedded system were introduced to execute various functions and research work. Along with that the super machines which covered the area which was equal to a room got so small and minute that people now keep there computers in pockets i.e smartphones.

• End of illiteracy in most of the region enhanced more research work:

Starting from the laws of motions and gravity, to the recent exploration of earth, moon, and moreover other planets, what made us more of human that before we do reasoning on imposing sanctions on not to let some one explore the universe, let them have the support from our side to enhance the technology and science overall. There were a number of research works which were carried out in the century or more.